How severe is CVE-2011-4563?

CVE-2011-4563 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-4563 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4563?

CVE-2011-4563 affects Jakcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-4563?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-4563 published?

CVE-2011-4563 was published on 2011-11-28 and last updated on 2026-06-16.

CVE-2011-4563

CVE-2011-4563 is a medium-severity vulnerability in Jakcms with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Jakcms
Published: 2011-11-28
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in index.php in JAKCMS 2.0.4.1, and possibly other versions before 2.2.6 2011-09-23, allows remote attackers to inject arbitrary web script or HTML via the userpost parameter in a PM request, related to tinymce. NOTE: some of these details are obtained from third party information.

Frequently asked questions

What is CVE-2011-4563?: Cross-site scripting (XSS) vulnerability in index.php in JAKCMS 2.0.4.1, and possibly other versions before 2.2.6 2011-09-23, allows remote attackers to inject arbitrary web script or HTML via the userpost parameter in a PM request, related to tinymce. NOTE: some of these details are obtained from third party information.
How severe is CVE-2011-4563?: CVE-2011-4563 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-4563 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4563?: CVE-2011-4563 affects Jakcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-4563?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4563 published?: CVE-2011-4563 was published on 2011-11-28 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:jakcms:jakcms:2.0.4.1:*:*:*:*:*:*:*

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